Rectifying rule for reading boards



Aug. 21, 1934.

" M. B. PENMAN RECTIFYING RULE FOR READING BOARDS 3 Sheets-Sheet 1 Filed June 1 1932 Aug. 21, 1934. M. B. PENMAN RECTIFYING RULE FOR READING BOARDS Filed Julie 10, 1932 3 Sheets-Sheet 2 1934. M. B. PENMAN 1,971,233

RECTIFYING RULE FOR READING BOARDS Filed June 10, 1932 3 Sheets-Sheet 5 il h,

Patented Aug. 21, 1934 UNi'i'E-D STATES TENT:

v 1,971,233 7 RECTIFYING RULE FOR READING BOARDS 7 Montgomery B. Penman, Bloomsburg, Pa., assignor to The Magee Carpet Company; Bloomsburg, Pa., a corporation of Pennsylvania Application June 10, 1932, Serial No. 616,565

1 Claim. (01. 33--107) In Axrninster carpets each horizontal row'oi squares represents a transverse line or course of pile tuits in the carpet and the vertical rows of squares represent the relative positions that the tufts of adjacent horizontal rows occupy with respect to each other transversely of the carpet. A separate pile yarn spool is wound for each horizontal row of squares on the design sheet appearing in a single repeat of the design in a direction warpwise of the carpet. Each spool is provided with a separate pile yarn for each square in the horizontal row to which that particular spool corresponds, the differently-colored threads on the spool and'th'eir relative positions on the spool with respect to each other corresponding to the positions of the difierently colored squares in the row. It is, therefore, essential that the possibilities of error in winding the spools be eliminated, in order that the various colored yarns will be in correct positions on the spool with respect to each other.

In reading a design a sighting rule is positioned adjacent the support for the sheet and is arranged to be brought intoparallel-andimmediately adjacent relation to the horizontal rows of squares successively. These sighting rules are usually of rigid construction and provided with graduations corresponding to and intended to to register with the lines defining the vertical rows of squares on the design sheet.

The design sheets for wide'carpets and rugs are proportionately wide and as the sheet is composed of paper it is subject to shrink or stretch under temperature and humidity variations of the atmosphere. The sighting rules being of metal are not affected by such conditions or at least to the same extent as the paper is affected.

the sighting rule as a whole with respect to thesheet. As the reading oi the design, for example from left to right, progresses the rule is intermittently shifted to bring relatively small groups of the graduations into registry with accordingly small groups of squares in the adjacently disposed horizontal row on the design sheet. i

In reading the designs of the wider variety it is common practice to employ two operators simultaneously reading the same row from opposite sides oi the sheettoward the center thereof, and under such conditions shifting of the rule with respect to. the sheet is impractical, for the reason that to bring the graduations into registry at one side of the sheet throws the graduations out of registry with the squares of the opposite side of the sheet to a greater extent than if no shifting of the rule with respect to the sheet was effected.

The object of the present invention is to provide a sectional sighting rule wherein the opposite ends oi the rule are arranged to be shifted relative to each other and to a fixed portion of the rule disposed at and all times in accurate registry with a relatively small group of squares at the center of the horizontal row being read.

With this construction two operators may simultaneously read a single horizontal row of squares on the design sheet from the opposite edges toward the center thereof and may independently adjust their particular sections of the rule without interfering with each other.

In the accompanying drawings:

Fig. 1 illustrates a front elevation oi a designsupporting cylinder and a sightingrule constructed and arranged according to the principles of the present invention;

Fig. 2 is a transverse sectional elevation drawn to an enlarged scale and taken on the line 22, Fig. 1;

Figs. 3 and 4 are transverse sectional elevations drawn to an enlarged scale and taken on thelines 3-3 and 4--4= respectively on Fig. 1;

Figs. 5 and 6 are faceviews of the sightingrule illustrating the sections thereof in relatively different positions;

Figs. 7 and Bare'sectionaI elevations taken on the line 7'7, Fig. 4, showing the relation of the inner ends of the movable sections of the sighting rule with respect to the stationary center section, with the movable sections in the positions shown in Figs. 5 and 6 respectively; and

Fig. 9 is a perspective view of a detail of the invention.

The reading apparatus in the present instance, and as shown in the accompanying drawings, comprises a wooden cylinder 1 provided with trunnions 2, 2 journaled in hangers 3, 3 secured to an overhead beam 4.

Attached to the peripheral suriace'oi the cylinder I, for example bytacks 5, 5, is a design sheet A, which in the present instance is illustrated as having three hundred and seventy eight squares in each horizontal row a.

Pivotally mounted on a rod 6, carried by the hangers 3, 3, is a pair of arms 7, 7, which are rigidly connected, intermediate their opposite ends, by a bar 8, and at their outer ends by a rigid bar 10. The bar 10 forms a support for the elements of the sectional sighting rule forming the subject of the present invention.

The sighting rule, in the present instance, comprises a central section 11 which is rigidly secured to the rigid bar 10 as by screws 12, 12 and also by a threaded end of the strut 13 which is passed through and is secured to the rigid bar 10 and the relatively fixed section 11 of the sighting rule by nuts 14, 14.. The opposite end of the strut 8 is secured to the upper fixed bar 8 by a bearing 15 suitably attached thereto, the strut 13 being adjustable with respect to the bearing 15 by means of nuts 26, 26 threaded on the upper.

end of the strut 13 for the purpose of aligning the center of the bar 10 with the opposite ends thereof which are secured to the arms 7, 7 respectively.

The center section 11 of the sighting rule is provided with a horizontal passage 16 in which jareslidably mounted the inner ends 17 and 18 of a pair of relatively movable sections 19 and 20 of the sighting rule. The outer ends and intermediate portions of the relatively movable sections 19 and 20 are provided with longitudiinally extending slots 21 for the reception of supporting screws 22 which are threaded into the rigid bar 10 and at the same time support spring clips 23 which, as shown in Fig. 9, bear against the outer surface of the rule sections 19 and 20,

3 pressing the same into firm frictional contact with the rigid bar 10.

Each of the sections 19 and 20 is provided with an operating knob 24, whereby the sections may be readily moved longitudinally of the rigid bar 10 and with respect to the fixed center section 11 of the sighting rule.

As shown in Fig. 5, each section 19 and 20 is provided with equally spaced graduations, the spaces between which are numbered consecutively from 1 to 188, the numbering on the section 19 reading from left to right, while the numbering on the section 20 reads from right to left in accordance with the manner in which two operators setting up or winding the yarns v, on a single spool simultaneously read the hori zontal row of design squares immediately adjacent the lower edge of the sighting rule.

The center section 11 of the sighting rule is provided with one set of numerals b, including 187, 188 and 189 reading from left to right,

" and a corresponding set of numerals 0 reading from right to left and abutting the group b along the center line at, x of the center section 11 with which the corresponding center line of the design sheet A is at all times aligned when in position on the cylinder 1. Under certain conditions or" the atmosphere the design sheet will expand laterally, as illustrated in Fig. 5, to such an extent that the vertical rows of squares on the .sheet are progressively thrown out of registry 'with the graduations of the rule from the center of the sheet toward the opposite edges thereof respectively when the rule is in a normal position shown in Fig. 5.

In order to read the row of squares immediately adjacent the lower edge of the rule accurately,

the operators move their respective sections 19 and 20 of the rule outwardly until the space registry with the corresponding first ten squares of the row a as to permit accurate reading of that portion of the design.

Afterthe threads called for by the first ten squares of a row at each side of the sheet are accurately positioned on the spool, the rule sections 19 and 20 may then be moved inwardly, independently of each other, until the spaces 11 thereon register accurately with the corresponding eleventh squares of the row a. The accurate registry would then prevail between the spaces 11 to 20 inclusive, after which the movable rule sections 19 and 20 would again be moved inwardly for accurate registry with another group of squares, and so on until the movable sections were again in the normal position shown in Fig. 5, wherein the spaces 180 to 189 inclusive on the movable and fixed rule sections 19, 11 and 20 accurately register with corresponding groups of the squares in the row a at each of the opposite sides of the center line x, .L'.

The relation of numbers on the movable and stationary sections of the sighting rule affords a check for the operators, so that the movable sections will at no time be moved inwardly an extra space or two which would throw the threads on.

the spool out of the relation that the threads were intended to hear one to the other on. the spool. For example, an operator after moving the rule section outwardly to bring the numeral 1 into registry with the first square notes the relation of the numeral 187 on the moved section to the numeral 187 on the fixed section and as the movable section is progressivelymoved outwardly the difference between the positions of these two correspondingnumbers decreases until the corresponding numbers 187 on the movable and fixed sections register one with the other and by watching the relation of these numbers each time a shift of the movable section is made the operator knows that the movable section has not been moved too great a distance.

I claim: 7

A rectifying scale for, reading charts provided with relatively spaced lines of division, said scale comprising a rigid continuous base strip, a pair of longitudinally aligned sections slidably mounted on said base strip, a central section fixed to the base strip and overlapping the adjacent ends of said movable sections, with corresponding outer edges of said fixed and movable sections disposed in a continuous straight line, graduations on each section adjacent the said outer edges thereof and spaced in accordance with a predetermined space for the lines of said charts, identifying characters on said movable sections adjacent the graduations thereon and arranged in corresponding progression from the remote ends of the two movable sections toward the said adjacent ends thereof, and two groups of identifying characters on and disposed respectively at the opposite sides of the center line of said fixed section, the characters of each group on the fixed section correlift sponding to the characters of the highest denomi- L nations on the underlying ends of the said mov- 

